Hi @adam26d:
My answer is based on previous @Thaya_Govzig topic thread (When bench start is given this shows - #7 by Thaya_Govzig) so I guess they are not still in production 
I don’t really know.
I think bench restart causes exactly this error if you try it in development mode.
Btw, seems you are the creator of stop.py . Many thanks, made my day every day 